摘要
为了考察随钻扩眼工具钻进过程中产生的特殊结构井眼对井底钻压分配的影响,按照相似原理建立了随钻扩眼工具底部钻柱动力学特性模拟实验装置,对领眼井底与阶梯井底的钻压分配规律进行了研究。模拟实验结果表明,随钻扩眼形成的阶梯式井底岩石要比领眼井底岩石更容易破碎,实际钻压分配比小于按照几何结构定义的钻压分配比。该结果与理论模型的研究得到的结论一致。
To study the effect of the peculiar borehole created by reaming while drilling tools on the ratio of weight on bit （WOB）, an experimental facility modeling the dynamic characteristic of the drill string with reaming while drilling tools was established based on the similarity principle. The experimental research on the ratio of WOB for the reaming while drilling tools wascarried out. And the results show that the rock around the ladder borehole is apt to fall into pieces compared with the rock around the pilot hole. The actual ratio of WOB is smaller than that calculated by the geometry method, which agrees well with the result obtained by the theoretical method.
出处
《中国石油大学学报（自然科学版）》
EI
CAS
CSCD
北大核心
2007年第6期44-47,共4页
Journal of China University of Petroleum(Edition of Natural Science)
关键词
随钻扩眼工具
钻压分配比
实验研究
reaming while drilling tools
ratio of weight on bit
experimental research
